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报告未使用的导出函数。
<p>在 Go 中，如果函数以大写字母开头，则导出该函数。 已定义但从未使用过的导出函数的名称将灰显。</p>
<pre><code>// 未使用的导出函数
func ExportedUnusedFunc()  {

}

func main() {
 fmt.Println("Hello")
}</code></pre>
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